Ordinance -- Page 1 of 9 <br />ORDINANCE NO. <br /> <br /> <br />AN ORDINANCE CONCERNING STORMWATER MANAGEMENT; AMENDING <br />SECTIONS 9.6791, 9.6792, 9.6793, AND 9.8030 OF THE EUGENE CODE, 1971; <br />AND PROVIDING AN EFFECTIVE DATE. <br /> <br /> <br />THE CITY OF EUGENE DOES ORDAIN AS FOLLOWS: <br /> <br />Section 1. Section 9.6791 of the Eugene Code, 1971, is amended to provide as follows: <br /> <br /> <br />9.6791 Stormwater – Flood Control. <br /> <br />(1) Purpose. The purpose of EC 9.6791 is to protect life and property from flood and drainage <br />hazards by maintaining the capacity of the city’s stormwater conveyance system through the <br />establishment of flood control regulations for stormwater runoff. These standards are also <br />intended to ensure that urban stormwater discharged into Junction City Water Control District’s <br />flood control system meets the assigned downstream capacity of the District’s system. <br /> <br />(2) Applicability and Exemptions. <br /> <br />(a) Except as provided in EC 9.6791(2)(b), flood control standards apply to all development <br />permit applications and land use applications. <br /> <br />(b) The standards in EC 9.6791(3) do not apply to development permit applications where <br />the proposed development will be served by a flood control facility that is a manmade <br />drainage system designed to accommodate stormwater run-off generated by the stormwater <br />basin area. <br /> <br />(3) Standards. <br /> <br />(a) Stormwater flood control facilities shall be selected, sited, designed, and constructed <br />according to adopted plans and policies, and in accordance with standards in EC Chapters <br />6 and 7, and the stormwater flood control provisions and the facility design requirements set <br />forth in the Stormwater Management Manual. <br /> <br />(b) Based on the Rational Method flow calculation, sStormwater runoff from the development <br />site for the applicable flood control design storm shall be: <br /> <br />1. Discharged into existing stormwater flood control facilities that, considering all <br />developments that have received tentative or final plan approval as of the date the <br />applicant submits a complete application, have the capacity to handle the stormwater <br />runoff; or <br /> <br />2. Retained or detained onsite; or